Bind named list of data.frames into one data.frame
lbind(mylist)
A named list of data.frame. The data.frames are expected to have the same structure.
data.frame with the originial columns augmented by a "condition" column.
Each data.frame ist augented by a "condition" column containing the name attributed of
the list entry. Subsequently, the augmented data.frames are bound together by rbind
.